A vibration-damping end cover structure and a motor using the same

Abstract

The embodiment of the present application discloses a damping end cover structure and a motor applying the same. The damping end cover structure is applied to a motor. The motor comprises a stator assembly and a rotor arranged in the stator assembly. The damping end cover structure comprises an end cover body and a bearing chamber matched with the end cover body. The end cover body covers the end of the stator assembly. The rotor passes through the end cover body and the bearing chamber. A gap is arranged between the end cover body and the bearing chamber. The gap is filled with damping material. The gap is arranged between the end cover body and the bearing chamber, and the gap is filled with damping material. The vibration of the end cover body and the bearing chamber caused by the rotation of the rotor is reduced, and the noise generated during the operation of the motor is greatly reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of equipment vibration reduction, and in particular to a vibration reduction end cover structure and a motor using the same. Background Art

[0002] As the power source for most mechanical equipment, electric motors play a vital role in the transmission of various mechanisms. However, noise issues remain a significant technical challenge during motor operation. Motor noise is primarily attributed to several factors: first, rotor imbalance within the motor, which directly leads to mechanical vibration and noise; second, bearing failure within the motor, which generates additional noise; and third, insufficient machining precision. For example, if components such as the housing, stator, rotor, and shaft are poorly finished, these components will overlap during final motor assembly, further amplifying the noise.

[0003] Currently, motor noise reduction designs primarily focus on improving the motor casing. However, this approach often results in a more complex overall structure and does not achieve the desired vibration and noise reduction results. Therefore, a new structural design is urgently needed to effectively address the vibration and noise issues associated with motor operation. Summary of the Invention

[0004] The purpose of the present invention is to provide a vibration-damping end cover structure and a motor using the same, aiming to solve the problems of vibration and noise during motor operation in the prior art.

[0005] To solve the above technical problems, the present invention is achieved through the following technical solutions: providing a vibration-damping end cover structure for use on a motor, the motor comprising a stator assembly and a rotor disposed within the stator assembly, the vibration-damping end cover structure comprising: an end cover body and a bearing chamber adapted to the end cover body, the end cover body being fitted to an end of the stator assembly, the rotor passing through the end cover body and the bearing chamber, a gap being provided between the end cover body and the bearing chamber, the gap being filled with a vibration-damping material;

[0006] Furthermore, the axial inner wall of the end cover body is provided with a groove, and the axial outer wall of the bearing chamber is provided with a protrusion corresponding to the groove; or the axial inner wall of the end cover body is provided with a protrusion, and the axial outer wall of the bearing chamber is provided with a groove corresponding to the protrusion;

[0007] Furthermore, the height of the protrusion is h, the width of the gap is d2, and the wall thickness of the end cover is b, satisfying: d2<h<0.5b;

[0008] Furthermore, the width of the protrusion is b2, and the width of the bearing chamber is B, which satisfies: 0.2B<b2<0.3B;

[0009] Further, a height difference between a slot opening horizontal plane of the groove and an outermost end horizontal plane of the protrusion is d3, a height of the protrusion is h, and a width of the gap is d2, and d3=h-d2, and 0.25h

[0010] Further, the groove and the protrusion are rectangular structures, or the groove and the protrusion are arc structures.

[0011] Further, the damping material is a high-damping material based on nitrile rubber, or the damping material is a high-damping material based on high-phenyl silicone rubber.

[0012] Further, the high-damping material based on nitrile rubber comprises nitrile rubber, chlorinated nitrile rubber, brominated p-t-octylphenol formaldehyde resin, carbon black, and an antioxidant, and the content of the nitrile rubber is 30-45% by mass, and the content of the chlorinated nitrile rubber is 10-20%.

[0013] Further, the width d2 of the gap satisfies 2mm≤d2≤4mm.

[0014] Further, the end cover cover body and the bearing chamber are integrally formed.

[0015] Further, the damping end cover structure further comprises a bearing arranged in the bearing chamber, and the rotor passes through the bearing, and the bearing is in contact with the end cover cover body and the rotor.

[0016] The damping end cover structure is arranged on the motor.

[0017] Further, the damping end cover structure is arranged in two, and the end cover cover bodies of the two damping end cover structures are respectively arranged on two ends of the stator assembly.

[0018] The damping end cover structure is arranged on the motor. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0020] Figure 1 A schematic structural diagram of a motor provided by an embodiment of the present invention;

[0021] Figure 2 A schematic cross-sectional view of a vibration-damping end cover structure provided by an embodiment of the present invention;

[0022] Figure 3 A schematic cross-sectional view of a decomposed vibration-damping end cover structure provided by an embodiment of the present invention;

[0023] Figure 4 for Figure 1 Enlarged view of part A.

[0024] Description of the symbols in the figure:

[0025] 100, stator assembly; 200, rotor;

[0026] 10. End cover body; 11. Groove; 20. Bearing chamber; 21. Protrusion; 22. Bearing; 30. Gap. DETAILED DESCRIPTION

[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0028] It will be understood that when used in this specification and the appended claims, the terms “comprises” and “comprising” indicate the presence of described features, integers, steps, operations, elements and / or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or groups thereof.

[0029] It should also be understood that the terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the present invention. As used in the specification and appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms unless the context clearly indicates otherwise.

[0030] It should be further understood that the term "and / or" as used herein in the specification and in the claims, unless otherwise specified, means any combination of one or more of the associated listed items. Conjunctive words such as "on or" or "and / or" as used herein, are to be interpreted in the same way as "or" to mean any combination of one or more of the associated listed items or the absence of one or more of the associated listed items.

[0031] In combination Figure 1 And Figure 2 As shown in the drawings, the embodiment of the present application provides a damping end cover structure applied to a motor, the motor comprising a stator assembly 100 and a rotor 200 arranged in the stator assembly 100, the damping end cover structure comprising: an end cover cover body 10 and a bearing chamber 20 matched with the end cover cover body 10, the end cover cover body 10 covering the end of the stator assembly 100, the rotor 200 passing through the end cover cover body 10 and the bearing chamber 20, and a gap 30 being arranged between the end cover cover body 10 and the bearing chamber 20, and the gap 30 being filled with damping material.

[0032] In the embodiment, the motor comprises a stator assembly 100 and a rotor 200 arranged in the stator assembly 100. The damping end cover structure comprises an end cover cover body 10 and a bearing chamber 20 matched with the end cover cover body 10 (the volume of the end cover cover body 10 is generally larger than the volume of the bearing chamber 20, the end cover cover body 10 covers the bearing chamber 20, but there is a gap 30 between the two). The end cover cover body 10 covers the end of the stator assembly 100 (usually a stop fit), and the rotor 200 passes through the end cover cover body 10 and the bearing chamber 20. In the embodiment, the gap 30 is filled with damping material, which can reduce the vibration caused by the movement of the rotor 200 when the motor rotates, thereby reducing the overall vibration and noise transmission of the motor body.

[0033] Specifically, when the motor is running, the rotation of the rotor 200 will cause vibration, which is transmitted to the end cover cover body 10 through the bearing chamber 20. By arranging damping material between the end cover cover body 10 and the bearing chamber 20, the vibration energy is absorbed by the damping material, effectively reducing the vibration transmission from the rotor 200 to the outside of the motor. In addition, the damping material can be filled in a potting manner, which can effectively reduce the vibration caused by the rotor shaft system, thereby reducing the noise caused by the vibration of the motor body and transmitted to the outside.

[0034] In combination Figure 3 As shown in the drawings, in an embodiment, the axial inner wall of the end cover cover body 10 is provided with a groove 11, and the axial outer wall of the bearing chamber 20 is provided with a protrusion 21 corresponding to the groove 11; or the axial inner wall of the end cover cover body 10 is provided with a protrusion 21, and the axial outer wall of the bearing chamber 20 is provided with a groove 11 corresponding to the protrusion 21.

[0035] In this embodiment, the axial inner wall of the end cover body 10 and the axial outer wall of the bearing chamber 20 are provided with mutually fitting grooves 11 and protrusions 21. This concave-convex matching structural design not only enhances the overall assembly stability, but also effectively reduces the axial movement of the bearing chamber 20, thereby reducing the risk of mechanical failure. The matching design of the groove 11 and the protrusion 21 further enhances the vibration resistance of the overall structure, so that under the action of vibration force, the relative position between the bearing chamber 20 and the end cover body 10 remains stable, thereby reducing additional vibration and noise caused by component displacement. Through the application of the vibration-damping end cover structure of the present invention, the overall performance of the motor is improved, especially in terms of noise and vibration control. This not only extends the service life of the motor, but also improves the adaptability of the motor in noise-sensitive environments.

[0036] Furthermore, a groove 11 and a corresponding protrusion 21 form a pair of limiting groups; a plurality of limiting groups can be circumferentially spaced apart on the axial inner wall of the end cover body 10 and the axial outer wall of the bearing chamber 20 to achieve a strengthening and consolidating effect, so that the axial movement of the bearing chamber 20 is further reduced. In addition, a plurality of limiting groups can also be axially spaced apart on the axial inner wall of the end cover body 10 and the axial outer wall of the bearing chamber 20. Even the groove 11 and the protrusion 21 can be designed as an annular structure distributed along the circumference, so that the groove 11 forms an annular groove 11, and the protrusion 21 forms an annular protrusion 21, so that the limiting group constitutes an annular limiting group to achieve a better effect of preventing axial movement. Further, a plurality of such annular limiting groups can be axially spaced apart.

[0037] Combine Figure 4 As shown, in one embodiment, the height of the protrusion 21 is h, the width of the gap 30 is d2, and the wall thickness of the end cover body 10 is b, satisfying: d2<h<0.5b.

[0038] In this embodiment, when the condition d2<h<0.5b is met, the performance of the vibration-damping end cover structure can be better exerted. On the contrary, when h≤d2, it will result in d3≤0 (the fitting height between the protrusion 21 and the groove 11), resulting in an invalid fit between the protrusion 21 and the groove 11, thereby posing a risk of axial movement between the end cover body 10 and the bearing chamber 20. When h>0.5b, the wall thickness of the end cover body 10 at the groove 11 becomes too thin, which reduces the strength of the vibration-damping end cover structure and increases the risk of rupture. Therefore, an appropriate h value (d2<h<0.5b) ensures that there is sufficient contact area between the protrusion 21 and the groove 11, effectively preventing axial movement, while maintaining sufficient wall thickness of the end cover body 10 to reduce rupture caused by weak material.

[0039] In one embodiment, the width of the protrusion 21 is b2, and the width of the bearing chamber 20 is B, which satisfies the following relationship: 0.2B<b2<0.3B.

[0040] In this embodiment, the width b2 of the protrusion 21 is set based on the width B of the bearing chamber 20. The wall thickness of the bearing chamber 20 is d1. When the condition of 0.2B < b2 < 0.3B is met, the performance of the vibration-damping end cap structure can be improved. Conversely, when b2 ≤ 0.25B, the width of the protrusion 21 becomes too weak, which may cause the protrusion 21 to buckle or crack under mechanical load or vibration. When 0.3B ≤ b2, the wall thickness b of the end cap body 10 is correspondingly reduced, which may reduce the structural strength of the end cap body 10 and increase the risk of overall failure of the end cap body 10.

[0041] Specifically, by setting the width b2 of the protrusion 21 to between 20% and 30% of the width B of the bearing chamber 20, not only can the protrusion 21 be reduced from buckling or cracking due to being too thin, but it can also reduce the overall strength of the end cover 10, which would otherwise be reduced due to the thinning of the end cover 10. The appropriate width b2 of the protrusion 21 ensures the stability of the end cover 10 and the bearing chamber 20 during long-term operation, reducing maintenance costs and potential failure rates.

[0042] In one embodiment, the height difference between the notch horizontal plane of the groove 11 and the outermost horizontal plane of the protrusion 21 is d3, the height of the protrusion 21 is h, the width of the gap 30 is d2, d3=h-d2, and satisfies: 0.25h<d3<0.5h.

[0043] In this embodiment, the height difference between the notch horizontal plane of the groove 11 and the outermost horizontal plane of the protrusion 21 is d3 (i.e., corresponding to the above-mentioned fitting height between the protrusion 21 and the groove 11), which is defined as d3=h-d2. When the condition of 0.25h<d3<0.5h is met, the performance of the vibration-damping end cover structure can be better exerted. On the contrary, when d3≤0.25h, the fitting size of the protrusion 21 and the groove 11 is too small, resulting in an unclear axial fixing effect, which will cause the bearing chamber 20 to move slightly relative to the end cover body 10 during the operation of the machine, thereby affecting the operating stability of the entire machine. When 0.5h≤d3, the wall thickness b of the end cover body 10 is relatively reduced, which will reduce the overall strength of the end cover body 10 and increase the risk of deformation or damage of the end cover under high load or high vibration conditions.

[0044] Specifically, setting the range of 0.25h < d3 < 0.5h ensures sufficient contact area between protrusion 21 and groove 11 without weakening the strength of the vibration-damping end cap structure due to an excessively thin wall thickness b of end cap body 10. By optimizing the d3 value, the vibration-damping end cap structure maintains necessary contact and support while avoiding excessive stress concentration caused by an overly tight fit, thereby improving the durability of the entire motor end cap.

[0045] It should be noted that the width of the groove 11 is b1, which satisfies the condition: b1=b2+2d2. In this way, the width of the entire gap is equal everywhere, which can make the performance of the vibration-damping end cover structure better.

[0046] In one embodiment, the groove 11 and the protrusion 21 are both rectangular structures, or the groove 11 and the protrusion 21 are both arc-shaped structures.

[0047] In this embodiment, the groove 11 and the protrusion 21 can adopt a rectangular structure or an arc structure, which is a structure observed along the axial section (ie, Figures 1-4 angle), determined according to actual design requirements and application scenarios. When the groove 11 and the protrusion 21 are both rectangular structures, a stable axial fixing effect can be provided, and the rectangular structure is suitable for most standard motor applications. When the groove 11 and the protrusion 21 both adopt an arc-shaped structure, smoother force transmission and smaller stress concentration can be provided. They are usually more commonly used in high-speed or high-load applications. The arc-shaped structure can maintain better contact under different motion states, reducing wear and noise. The present invention can adapt to different operating environments and reduce the failure rate by flexibly selecting the shape of the groove and the protrusion (rectangular or arc-shaped).

[0048] In one embodiment, the vibration-damping material is a high-damping material based on nitrile rubber, or the vibration-damping material is a high-damping material based on high-phenyl silicone rubber.

[0049] In this embodiment, the vibration-damping material filled in the gap 30 can be selected from a high-damping material based on nitrile rubber, or a high-damping material based on high-phenyl silicone rubber. The vibration-damping end cover structure of the present invention effectively reduces the vibration caused by the rotor 200 shaft system by using a high-damping material, thereby reducing the vibration of the motor body and reducing the noise transmitted to the outside. The high-damping material based on nitrile rubber can replace traditional silencer cotton, and the high-damping material based on nitrile rubber provides a more superior vibration-damping and noise-reducing effect. The use of a high-damping material based on nitrile rubber has better vibration-damping and noise-reducing performance than general silencer cotton. The high-damping material based on nitrile rubber has excellent heat resistance and oil resistance, and is particularly suitable for high-temperature working environments.

[0050] Furthermore, as two high-damping materials, nitrile rubber and high-phenyl silicone rubber both have excellent damping properties. Nitrile rubber provides better oil resistance and wear resistance, while high-phenyl silicone rubber is more stable under extreme temperatures.

[0051] In one embodiment, the high-damping material based on nitrile rubber includes: nitrile rubber, chlorinated nitrile rubber, brominated tert-octylphenol formaldehyde resin, carbon black and an antioxidant; wherein, by mass ratio, the content of the nitrile rubber is 30% to 45%, and the content of the chlorinated nitrile rubber is 10% to 20%.

[0052] In this embodiment, the high-damping material based on nitrile rubber includes nitrile rubber, chlorinated nitrile rubber, brominated tert-octylphenol formaldehyde resin, carbon black, and an antioxidant. These components are mixed by weight, with the nitrile rubber content being 30% to 45% and the chlorinated nitrile rubber content being 10% to 20%. Nitrile rubber and chlorinated nitrile rubber can provide basic elasticity and chemical resistance. Brominated tert-octylphenol formaldehyde resin acts as an efficient curing agent and damping enhancer, improving the material's stability at high temperatures. Carbon black is used to enhance the material's mechanical strength and wear resistance, while the antioxidant is used to prevent material aging and extend its service life.

[0053] The following is an explanation of the components of the high damping material based on nitrile rubber:

[0054] Nitrile Rubber (NBR): Nitrile rubber is a synthetic rubber made through the copolymerization of butadiene and acrylonitrile. It exhibits excellent resistance to oil, solvents, and heat. Due to its excellent chemical resistance, NBR is commonly used in the manufacture of oil-resistant hoses, seals, O-rings, and other components, particularly in applications involving contact with oils and fats.

[0055] Chlorinated Nitrile Rubber: Chlorinated Nitrile Rubber is obtained by chlorinating NBR. This chlorination enhances its chemical stability and improves its heat and oil resistance. Chlorinated Nitrile Rubber is used as a high-performance sealing material in the machinery industry and is also used in high-temperature applications, such as pipes for hot liquids.

[0056] Brominated p-tert-octylphenol formaldehyde resin: A synthetic resin made by the reaction of phenol and formaldehyde, modified by the introduction of bromine atoms to enhance its flame retardancy and chemical stability. These resins are commonly used as adhesives, coatings, and flame retardants. Adding these resins to rubber can improve the material's bonding strength and wear resistance.

[0057] Carbon Black: Carbon black is a fine particle composed of aggregated carbon atoms. It is produced by burning or pyrolyzing carbon-containing substances (such as petroleum). It has an extremely high surface area and strong adsorption capacity. Adding carbon black to rubber products can improve the rubber's wear resistance, tensile strength, tear strength, and aging resistance.

[0058] Antioxidants: Antioxidants are chemical additives that prevent materials from aging due to oxidation. These compounds interrupt the oxidation chain reaction, thereby protecting the material from oxidative damage. Antioxidants are widely used in various rubber and plastic products to extend the service life of the product, especially in environments exposed to heat, light, or mechanical stress.

[0059] Together, these component materials create a highly damping nitrile rubber-based material that excels in vibration and noise control applications, particularly where high temperature, oil, and chemical resistance is required.

[0060] Of course, NBR is also formulated based on mass ratios (e.g., 30% to 45%). The right amount of NBR ensures the material possesses sufficient elasticity to withstand mechanical stress. NBR is particularly well-suited for environments exposed to grease and fuels, as its acrylonitrile units provide excellent oil resistance. Within the 30% to 45% NBR content, the material maintains its performance even in oily environments.

[0061] Chlorinated nitrile rubber is also formulated according to the mass ratio (such as 10% to 20%). Due to the chlorination modification, the chemical resistance of chlorinated nitrile rubber is stronger than that of ordinary nitrile rubber, which makes chlorinated nitrile rubber more durable in applications. Chlorination modification also improves the temperature resistance of the material, enabling it to work at higher operating temperatures without failure. This is especially important for equipment used in hot environments. The addition of chlorinated nitrile rubber can improve the damping properties of the material because it increases the friction and energy dissipation mechanism inside the material. Within the ratio range of 10% to 20%, this ratio of chlorinated nitrile rubber can provide effective damping without making the material too hard or brittle.

[0062] Specifically, when the motor is running, the vibrations generated by the rotor 200 and other moving parts are transmitted through the body structure. The use of high-damping materials based on nitrile rubber can effectively absorb and dissipate vibration energy, reducing the impact of vibration on the motor and the surrounding environment. The loss factor of the high-damping material based on nitrile rubber exceeds 1.3 at room temperature, and especially at 40°C, the loss factor can reach a maximum of 2, indicating that within the common operating temperature range of motors (23°C to 64°C), this high-damping material based on nitrile rubber can provide a continuous and effective damping effect.

[0063] Furthermore, the loss factor is used to describe the damping performance of a material in a vibration environment, that is, the ratio of the energy consumed by the material in each vibration cycle to the energy stored. This parameter can affect the material's ability to reduce vibration and noise. The loss factor is a unitless value that expresses the efficiency of the material in dissipating energy. Its mathematical definition is the ratio of the material's loss modulus to the storage modulus. Among them: the loss modulus (Imaginary part of the complex modulus) represents the material's ability to dissipate energy, which is related to the friction and energy conversion mechanism inside the material. The storage modulus (Real part of the complex modulus) represents the material's ability to store elastic energy and reflects the elastic properties of the material.

[0064] A material with a high loss factor dissipates more energy per vibration cycle. Such materials are ideal for vibration and noise reduction applications because they effectively convert vibration energy into heat or other forms of energy, reducing the transmission of vibration and noise. The loss factor of many high-damping materials varies with temperature. At certain temperatures, the material's damping performance reaches its optimum, or its loss factor reaches its highest value.

[0065] In the present invention, the loss factor of the high-damping material based on nitrile rubber at room temperature has exceeded 1.3, indicating that the high-damping material based on nitrile rubber has excellent damping performance at room temperature. In particular, at 40°C, the loss factor can reach a maximum of 2, which shows that the damping performance of the high-damping material based on nitrile rubber is even better at slightly higher temperatures. This characteristic enables it to continuously provide an effective damping effect within the common operating temperature range of motors (23°C to 64°C), helping to reduce the vibration and noise generated by the operation of the motor, thereby improving the overall performance and durability of the motor.

[0066] Overall, high-damping materials based on nitrile rubber are well-suited for applications requiring vibration control and noise reduction, such as electric motors, automotive interior components, and various industrial equipment.

[0067] In one embodiment, the width d2 of the gap 30 satisfies: 2 mm ≤ d2 ≤ 4 mm.

[0068] In the present embodiment, the width d2 of the gap 30 is set between 2mm and 4mm, and this range can achieve a good noise reduction effect. On the contrary, when d2 < 2mm, the thickness of the high-damping material is not enough to provide the necessary damping effect, which will result in poor noise reduction effect. When 4mm < d2, although a damping effect can be provided, the increase in the amount of material leads to rising costs, and the improvement in noise reduction effect is not significant. The high-damping material used in the present invention is a high-damping material based on nitrile rubber, and the high-damping material based on nitrile rubber shows good damping performance in a thickness range of 2mm to 4mm.

[0069] In this embodiment, heights h, d1, d2, and d3 refer to radial lengths, and wall thickness b refers to radial lengths; widths B, b1, and b2 refer to axial lengths, and gap width refers to the width of the gap itself.

[0070] In one embodiment, the end cover body 10 and the bearing chamber 20 are both integrally formed structures.

[0071] In this embodiment, the end cover body 10 and the bearing chamber 20 are manufactured by an integral casting method, which can improve the integrity and durability of the entire structure. The integrally formed structure overcomes the problems of assembly errors and loose assembly, ensuring the stability and reliability of the motor during operation. The integrally formed end cover body 10 and the bearing chamber 20 effectively reduce the propagation of vibration by providing solid support and good sealing. In specific implementation, the end cover body 10 and the bearing chamber 20 can be integrally formed separately, or they can be formed at the same time, that is, the end cover body 10 and the bearing chamber 20 are integrally formed, and an opening with a gap 30 is left, so that the vibration damping material is poured at the opening.

[0072] In one embodiment, the vibration-damping end cover structure further includes a bearing 22 disposed in the bearing chamber 20 , and the rotor 200 also passes through the bearing 22 . The bearing 22 is in contact with the end cover body 10 and the rotor 200 .

[0073] In this embodiment, the fit between the bearing 22, the rotor 200, and the end cap 10 is a major factor in vibration during motor operation. The rotor 200 is supported by the bearing 22, ensuring stability during high-speed operation while reducing wear. The end cap 10 is connected to the stator assembly 100 via a stoppered fit, which not only improves overall assembly stability but also prevents component shifting or loosening under high loads.

[0074] An embodiment of the present invention further provides a motor, comprising a stator assembly 100 , a rotor 200 disposed in the stator assembly 100 , and the vibration-damping end cover structure described above.

[0075] In this embodiment, the stator assembly 100 provides a static magnetic field, enabling efficient motor operation. The rotor 200 is mounted within the stator assembly 100 and generates rotational power through electromagnetic interaction. The gap 30 of the vibration-damping end cap structure is encapsulated with a high-damping material, preferably a nitrile rubber-based material. This nitrile rubber-based high-damping material within the vibration-damping end cap structure absorbs vibrations caused by the rotor 200 during motor operation, effectively reducing the impact of these vibrations on the motor and the surrounding environment.

[0076] In one embodiment, two vibration-damping end cover structures are provided, and the end cover bodies 10 of the two vibration-damping end cover structures are respectively covered at both ends of the stator assembly 100 .

[0077] In this embodiment, two vibration-damping end cover structures are respectively located at both ends of the stator assembly 100. The two vibration-damping end cover structures are similar, and the two vibration-damping end cover structures can be divided into a front vibration-damping end cover structure and a rear vibration-damping end cover structure. The design of the two vibration-damping end cover structures simplifies the production process and reduces the design complexity, while ensuring that the vibration or noise introduced into the interior of the motor from either end can be effectively controlled and reduced. The two vibration-damping end cover structures also help maintain the balance of the motor during operation and prevent vibration asymmetry that may be caused by differences in the end covers. The end cover cover body 10 in each vibration-damping end cover structure covers the stator assembly 100. By using high-damping materials in the gap 30 between the two vibration-damping end cover structures, the vibration generated by the movement of the rotor 200 can be reduced, thereby reducing noise and improving the overall operating efficiency of the motor.

[0078] To further optimize motor performance, high-damping materials are used to ensure not only effective vibration suppression but also stable performance in harsh operating conditions such as high temperature and high humidity. Furthermore, to address the wear and aging issues that may arise from long-term motor operation, a number of preventative measures can be implemented, including enhancing the wear resistance of materials, improving the fatigue resistance of structures, and optimizing lubrication systems, ensuring that the motor maintains excellent performance throughout its lifecycle.

[0079] Furthermore, to enhance the intelligence of motors, sensor technology and data analysis algorithms can be integrated into motor design. By real-time monitoring of key parameters such as the motor's operating status, vibration, and temperature, combined with big data analysis, motor performance can be predicted and maintained, potential problems can be identified and resolved in advance, unplanned downtime can be avoided, and motor reliability and availability can be further improved.

[0080] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in the present invention, and such modifications or substitutions are intended to be within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be subject to the scope of protection of the claims.

Claims

1. A vibration-damping end cap structure, applied to a motor, wherein the motor comprises a stator assembly and a rotor disposed in the stator assembly, characterized in that: The vibration-damping end cover structure includes: an end cover body and a bearing chamber adapted to the end cover body, wherein the end cover body covers the end of the stator assembly, and the rotor passes through the end cover body and the bearing chamber, and a gap is provided between the end cover body and the bearing chamber, and the gap is filled with a vibration-damping material; The axial inner wall of the end cover body is provided with a groove, and the axial outer wall of the bearing chamber is provided with a protrusion corresponding to the groove; or the axial inner wall of the end cover body is provided with a protrusion, and the axial outer wall of the bearing chamber is provided with a groove corresponding to the protrusion; The width of the protrusion is b2, and the width of the bearing chamber is B, which satisfies: 0.2B<b2<0.3B; The height difference between the notch horizontal plane of the groove and the outermost horizontal plane of the protrusion is d3, the height of the protrusion is h, the width of the gap is d2, d3=h-d2, and satisfies: 0.25h<d3<0.5h.

2. The vibration-damping end cap structure according to claim 1, characterized in that: The height of the protrusion is h, the width of the gap is d2, and the wall thickness of the end cover is b, satisfying: d2<h<0.5b.

3. The vibration-damping end cap structure according to claim 1, characterized in that: The groove and the protrusion are both rectangular structures, or the groove and the protrusion are both arc-shaped structures.

4. The vibration-damping end cap structure according to claim 1, characterized in that: The vibration-damping material is a high-damping material based on nitrile rubber, or the vibration-damping material is a high-damping material based on high-phenyl silicone rubber.

5. The vibration-damping end cap structure according to claim 4, characterized in that: The high-damping material based on nitrile rubber includes: nitrile rubber, chlorinated nitrile rubber, brominated tert-octylphenol formaldehyde resin, carbon black and an antioxidant; wherein, by mass ratio, the content of the nitrile rubber is 30% to 45%, and the content of the chlorinated nitrile rubber is 10% to 20%.

6. The vibration-damping end cap structure according to claim 1, characterized in that: The width d2 of the gap satisfies: 2mm≤d2≤4mm.

7. The vibration-damping end cap structure according to claim 1, characterized in that: The end cover body and the bearing chamber are both integrally formed structures.

8. The vibration-damping end cap structure according to claim 1, characterized in that: The vibration-damping end cover structure further includes a bearing disposed in the bearing chamber, the rotor further passes through the bearing, and the bearing is in contact with and cooperates with the end cover body and the rotor.

9. A motor, characterized in that: The invention comprises a stator assembly, a rotor arranged in the stator assembly and a vibration-damping end cover structure according to any one of claims 1 to 8.

10. The motor according to claim 9, characterized in that There are two vibration-damping end cover structures, and the end cover bodies of the two vibration-damping end cover structures are respectively covered on both ends of the stator assembly.

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